中文摘要：

【目的】研究刺五加提取物（ASE）的抗仔猪断奶应激作用。【方法】生长试验选用96头体重相近的21日龄断奶仔猪,按体重和性别随机分为3个处理,每个处理4个重复,分别饲喂基础日粮、添加ASE日粮和添加抗生素日粮。试验期21d,观察仔猪生长性能,测定血清生化参数及相关激素水平的变化。消化试验选用6头仔公猪（同上）,按2×3×3复拉丁方设计,饲喂上述3种日粮,测定营养物质的消化率。【结果】与基础日粮组相比,ASE可显著提高日增重、显著降低料肉比;提高日粮钙、总能和磷的表观消化率;提高断奶后血清低密度脂蛋白、胆固醇和葡萄糖的含量,降低血清尿素氮含量并提高血清碱性磷酸酶活性;显著提高血清游离甲状腺素T3和T4、生长激素及胰岛素样生长因子-1水平和T3/T4。【结论】ASE可调节激素分泌,提高断奶仔猪消化代谢水平,从而减缓断奶应激,促进仔猪生长。

英文摘要：

【Objective】 The study was conducted to test the hypothesis that dietary supplementation of Acanthopanax senticosus extracts （ASE） inhibits weanling stress in piglets. 【Method】 Ninety-six piglets weaned at 21 day of age were randomly divided into 3 treatment groups with 4 replicates for each by weight and sex to investigate the growth performance, serum biochemical parameters and hormone levels correlated to growth. Another 6 male piglets were selected to investigate the apparent digestibility of nutrients with 2× 3× 3 Latin square design. The piglets were fed basal diet suplemented with 0, ASE or antibiotics, respectively. 【Result】 ASE significantly increased the ADG, improved the gain-feed ratio in comparison with the basal diet group. Apparent digestibility of Ca, TE and P in the ASE group was higher than that of basal diet group. ASE increased the serum contents of LDL, CHO, GLU and the activity of ALP, decreased the content of SUN, and significantly increased the serum contents of FT3, FT4, GH, IGF-1 and FT3/FT4 in comparison with the basal group. 【Conclusion】 The findings showed that ASE as a dietary additive can modulate hormone levels, elevate the digestion and metabolism, thereby inhibit weanling stress and improve growth performance.